Review on 🧩 ROKR Adults Mechanical Kits: Uniquely Challenging Brain Puzzles & Vehicle Kits by Brian Campbell

Caution! This puzzle is made in 1:80 scale (the standard scale for car models is 1:25). The assembled locomotive is only about 7 inches long. There are many tiny and fragile parts that are difficult to handle and easy to break. The accuracy of fit is very bad. Wheels won't stay on axles without glue. In many cases, the same assembly is repeated first on the right and then on the left. The joints on one side bump into each other while the other truly experiences patience. This puzzle did not contain wax. Using wax helped with some tricky builds. There are a few spots where following the instructions makes assembly more difficult than getting creative. This is NOT one of ROKR's best puzzle games.